Iota Persei - Text by Anders SandbergMinor star Iota Persei is surrounded by an asteroid belt that came to be inhabited by refugees, many from the nearby system of Bourgatov. This belt, colloquially known as The Iota evolved from a squatter camp The waning economy led to emigration, which in turn hastened the decay. The last (known) inhabitants left in 9300.

Jafalgia - Text by James RogersMetasoft reserve planet. Jafalgia has a long history of baseline artists, writers and musicians (such as Haliki Movarion and others), some of whom attempt to ascend to posthuman status, never to be heard from again. Jafalgia is also the world where the enigmatic transapient performance artist Quizical first appeared.

Jedman II - Text by M. Alan KazlevOuter Volumes Sagittarius Transcultural Cooperation planet, recently visited by the Caretaker-derived artefact known as the Guidestar as a mark of exemplary environmental maintenance by the inhabitants. The planet is famous for its dramatic scenery.

Jekaumeatrine - Text by M. Alan KazlevBrown Dwarf in the Centaurus region, used as neutral ground for the negotiations at the end of the Paradigm War. Currently the local HQ of the Paradigm Containment Organisation.

Jewel Box, The - Text by M. Alan KazlevNGC 4755 (also known as Kappa Crucis); an open cluster of about 100 stars, past the Crucis Outer Sector Periphery. This very young cluster is less than 10 million years old and is about 7500 light-years from Sol. A number of relativistic ai expeditions have been launched over the centuries, but the first is not expected to arrive for another 1800 years

Junna - Text by M. Alan KazlevMinor Negentropy Alliance world. During the period from 3267 to 3421 was center for the Institute of Baseline Psychotypology. Suffered during the Version War and became an MPA garrison. Since the age of separative empires the locals have drifted increasingly towards Zoeticism